Phosphorus -- Physiological effect -- Juvenile fiction. Neurofibromatosis -- Juvenile fiction. Ghost stories. Serial murders -- England -- London -- History -- 19th century -- Juvenile fiction. Murder -- Investigation -- England -- London -- History -- 19th century -- Juvenile fiction.

Boarding schools -- Juvenile fiction. Murder -- Juvenile fiction. London (England) -- Juvenile fiction. Ghost stories. Mystery fiction.

Sisters -- Fiction. Spiritual life -- Fiction. London (England) -- Fiction. Psychological fiction. Ghost stories.